Matches in SemOpenAlex for { <https://semopenalex.org/work/W4211256362> ?p ?o ?g. }
- W4211256362 abstract "Abstract The mergers of double neutron star (NS–NS) and black hole (BH)–NS binaries are promising gravitational wave (GW) sources for Advanced LIGO and future GW detectors. The neutron-rich ejecta from such merger events undergoes rapid neutron capture ( r -process) nucleosynthesis, enriching our Galaxy with rare heavy elements like gold and platinum. The radioactive decay of these unstable nuclei also powers a rapidly evolving, supernova-like transient known as a “kilonova” (also known as “macronova”). Kilonovae are an approximately isotropic electromagnetic counterpart to the GW signal, which also provides a unique and direct probe of an important, if not dominant, r -process site. I review the history and physics of kilonovae, leading to the current paradigm of week-long emission with a spectral peak at near-infrared wavelengths. Using a simple light curve model to illustrate the basic physics, I introduce potentially important variations on this canonical picture, including: $$sim $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>∼</mml:mo> </mml:math> day-long optical (“blue”) emission from lanthanide-free components of the ejecta; $$sim $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>∼</mml:mo> </mml:math> hour-long precursor UV/blue emission, powered by the decay of free neutrons in the outermost ejecta layers; and enhanced emission due to energy input from a long-lived central engine, such as an accreting BH or millisecond magnetar. I assess the prospects of kilonova detection following future GW detections of NS–NS/BH–NS mergers in light of the recent follow-up campaign of the LIGO binary BH–BH mergers." @default.
- W4211256362 created "2022-02-13" @default.
- W4211256362 creator A5051746541 @default.
- W4211256362 date "2017-05-16" @default.
- W4211256362 modified "2023-10-10" @default.
- W4211256362 title "Kilonovae" @default.
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